Trap-door.



O. W. MEISSNER.

vTRAP DooR.

APPLICATION FILED NOV. 13, 1907.

Patented Apr. 1.9.12

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TRAP DOOR. /1 APPLIOATION FILED NQV. 13, 1907.

Patentes/d @11.23, 1912.

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1111 Illll nlliillllllllllltllllllll side, such member being preferably *carried by vthe door, and means for moving ;:Sujchj'member to and from sealing position.

comprehension, however, yof my in- *l plan view thereof.-

these flanges 'e except at one end, and that. end is closed' by a valvular member eonstituting .the prnciplefeature of this invenand, -consequently,=the doen-'follow i t,'the A forro- WIILIAM Meissner; fijwnsriioum, eoliano; einem.

that O'rro -VILLIAM Nr.3, jof'Westmount, lProvince of Quebec, Canada, `have inventedcertain new 'and useclear', and eiractdescription'of the'same.-

.My invention relates particularly to tra'p doors for use 4in controlling the flow of audit may bel said brietiy-*to consist of trapgoor having'three sides anged, a valvuivlan-'xiieiiiber adapted-to; close 'and seal the L'Figure :1 is'a .of'a portion olf-a railway car with my 1n- 'vention applied vvthereto; and Fig.- 2 is -a The preferred v embodiment of my invenf tion consists of a door bprovided' with lat? 'erally rejecting flanges@ on one end and botiisi es, such door'bei'ng hinged in a slotted hinge block d, while the opening in the door frame is provided with flanges 'e on all four sides, the door being adapted to inelose tion; This .valvular member. consists preferably. of an angle iron g movably supported and adapted to be set in placesupport-ing. and sealmg the free end of the door after jthe latter is. closed. This angle iron is carried and operatedby the following means ,A pair of arms 2 are mounted pivotally in bearings 4.- secured rigidly upon the under- 'side of the free end. of the door, such arms vhaving the angle iron g secured rigidly thereto, and they are formed with shoulders 3 adapted to rest upon the usual door raising and lowering shaft 5, when the door 1s closed.. This memberis placed inits sealing position by the shaft vas .the lattercloses the door and simultaneouslywith such ac tion, and as the shaft is lowered I'the arms 2 Mnissl `leereals,'coal, A'oneand other loose `commedie,- ties, althouglrit can be applied, with ad-..:

vanltage'to otherfdoors' requiring -to be sealed,

Vpanying drawings .forming'a part, of this specificatom.whereincorrespondig referer ence numerals indicatev thesame parts, and

25 longitudinal sectioniil view A r firm ma 1 sptcieaimnfieeefsraam.; i Patented Apr. 23, 1912. Apl'ineatin mei Novembep1a19p7f.. serial No. 401,955.

arms turning on theirpivots owing to the preponderance of weight of' tlieangle-iron, Auntil the member linds its center of gravity, lwhich automatic action places it beneath the free-end of the door and therefore entirely out of the .'dump'ed The tracks 10' its action are well known as is also the means path vof -the material being for-guiding' the vsha-ft 5 in Afor operating the shaft,.such ,parts are therefore not described in detail, and the last- 4 mentioned means are not sho-wn,

' The object of the sliding hinged connection for the door is to enable the flange of responding flange on thedoor framel as the door 1s operated.'-

the lat-ter at the hinged end to clear the con' The structure vherein shown is covered broadly by claims in an application'filed iby.

-me Nov. 12, 1907, serial No. 401,876.

What I claim is as follows l. The combination' withl a flanged trap door of trough form with one end open of a downwardly' *displaeeable flange carried a common operating mechanism foroperating the door and flange.

.80 upon the door for closing such open end, and

2. The combination with a trap door, of a ,i

displaceable flange mounted upon and displaoeable away from the' door and adapted --L to seal the joint between one side thereof and the contiguous portion of the door frame,

Aand a common mechanism-flor operating the door and ange.

3. The combinationl withay trap door j llangedto form a trough-,with one end open, of a valvular member movably secured to the door and adapted to close the said open end of the trough, and means for operatingthe saidV valvular member. a

- 4. The combination with a trap door a,vv

movable valvular member adapted toover lap and inclose-oneside of the door andthe 'l l contiguous portion of th' door frame when the door is closed and automaticallyl move 5. The combination with a trap door anda shaft for raising and lowering thedoor, of

a valvular member for sealing the joint b e`` tween one side of the door and the contigu- -for operating the said valvular member, .in-

f .6.Theicombination with atrap door presuph vside lwhen the dooris ons portion of the doorl frame, and. means sentinga chntefwith an open end, of a member carried by the door and presenting a portionvadaptedto extend above the surface ofthe chute and close the said open end when the door is closed and recede from such position when the door is opened.

7 The kcon'ibination with a 'trap door presenting a chute with an open end, of a mein-` be'r carried by the vdoor and presenting a flange-like portion adapted to extend above the surface of the chute andl close the said ber fis' operated.

fopen end when the door is closed and recede from'such position when the door is opened..

S. The combination with a trap door pre.- senting a chutewith an open end, of an angular member carried by the door and presenting a flange-like portion adapted to extend above kthe surface of the chute 'and close the said open end when the door is closed and recede from such position when the door is opened, and means whereby the said mem- 9. The combination with a door frame having a continuous flange extending around. all sides of the door opening7 al trap f door hinged to the frame and having a cntinuous flange extending around allthe'sides vthereof except Vone and adapted to inclose the "corresponding portion of the flange of the door opening, and displaceable means carried by the door for sealing the 'joint between the remaining portion ofthe door and the flanged frame. i

10. The combination with a door frame having a continuous Aflange extending Varound all sides of the door opening, a trap door hinged to the frame and having a continuous flange extendingaround all the sides thereof except one andadapted t0 inclose the I corresponding portion of the ange of the door opening, an angular member, and

meansv carried by thedoor for swinging the said member 'to and from position sealmg the joint between the remaining portion of the door and the flanged frame.

11. The combination with a door frame having. a continuous flangey extending `around all sides of the door opening, av trap door hinged to the framey and having a continuo'us flange extending around all the sides thereof 'except one and adapted tov inolose the corresponding portion of the flange/of the door opening, a pair of lsupporting arms hinged. to the door, an angle iron Smounted rupon .such arms, and means Afor allowing the ofthe Harige vof the 'door opening;A ashaft for raising and lowerlng the door; avpair of arms pivoted to .the door and presentlng shoulders adapted to `have the saidshaft bearthereon; and an angle ironmounted .rigidly in the saidarms ,and adapted to seal -the joint between the portion ofthe door not flanged and the corresponding portionof the door frame. l

In. testimony whereof, I havesigned my adapted to inclose `the corresponding portion name to this specification, in the'- presence. of

two subscribing witnesses` OTTO WILLIAM MEISSNlFDz-t-v Witnesses;`

Wim-.IAM P. MCEAT, ARTHUR H. EVANS. 

